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International Journal of Molecular Medicine
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Article

Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction

  • Authors:
    • Lijun Sun
    • Yuewen Hao
    • Xiaowei Nie
    • Jian Xu
    • Zhenwu Li
    • Wei Zhang
    • Ying Liu
    • Xuexin Zhang
  • View Affiliations / Copyright

    Affiliations: Department of Radiology, Xijing Hospital of the Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
  • Pages: 171-177
    |
    Published online on: November 19, 2013
       https://doi.org/10.3892/ijmm.2013.1558
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Abstract

PR39 is an angiogenic masterswitch protein, belonging to the second generation of angiogenic growth factors. However, the role of recombinant adeno-associated virus (AAV) carrying the PR39 fusion gene (AAV-PR39) in acute myocardial infarction remains unclear. Therefore, in this study, we investigated the role of AAV-PR39 in an experimental animal model of acute myocardial infarction. The PR39 gene was fused with the transmembrane peptide, TAT, 6xHis‑tag and NT4 signal sequences. AAV-PR39 was then obtained by calcium phosphate co-precipitation. A total of 18 healthy Chinese mini pigs were randomly divided into an experimental groups (the AAV-PR39-treated group) and a control group [phosphated-buffered saline (PBS)-treated group]. Following the induction of myocardial infarction, enhanced 3.0T MR imaging was performed to observe the changes in myocardial signal intensity at 0 h, 1, 2 and 3 weeks. The expression of hypoxia-inducible factor‑1α (HIF-1α) in the myocardial tissues was determined by SABC immunohistochemistry. In addition, in vitro experiments using CRL-1730 endothelial cells transfected with AAV vector containing NT4-TAT-His-PR39 revealed that the AAV-PR39-treated group had a significantly higher expression of HIF-1α compared with the control group. Moreover, PR39 regulated the HIF-1α-induced expression of angiogenic growth factors. Under hypoxic conditions, the anti-apoptotic effects in the AAV-PR39 group were more pronounced than those observed in the control (PBS-treated) group. In vivo, the enforced expression of recombinant PR39 elevated the level of HIF-1α under hypoxic conditions and decreased the size of the infarcted areas by upregulating the expression of HIF-1α in the areas surrounding the infarct area. Taken together, our data demonstrate that the recombinant AAV-PR39-mediated HIF-1α expression attenuates myocardial infarction, indicating that AAV-PR39 may serve as a novel therapeutic agent for the treatment of myocardial infarction.
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Copy and paste a formatted citation
Spandidos Publications style
Sun L, Hao Y, Nie X, Xu J, Li Z, Zhang W, Liu Y and Zhang X: Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction. Int J Mol Med 33: 171-177, 2014.
APA
Sun, L., Hao, Y., Nie, X., Xu, J., Li, Z., Zhang, W. ... Zhang, X. (2014). Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction. International Journal of Molecular Medicine, 33, 171-177. https://doi.org/10.3892/ijmm.2013.1558
MLA
Sun, L., Hao, Y., Nie, X., Xu, J., Li, Z., Zhang, W., Liu, Y., Zhang, X."Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction". International Journal of Molecular Medicine 33.1 (2014): 171-177.
Chicago
Sun, L., Hao, Y., Nie, X., Xu, J., Li, Z., Zhang, W., Liu, Y., Zhang, X."Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction". International Journal of Molecular Medicine 33, no. 1 (2014): 171-177. https://doi.org/10.3892/ijmm.2013.1558
Copy and paste a formatted citation
x
Spandidos Publications style
Sun L, Hao Y, Nie X, Xu J, Li Z, Zhang W, Liu Y and Zhang X: Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction. Int J Mol Med 33: 171-177, 2014.
APA
Sun, L., Hao, Y., Nie, X., Xu, J., Li, Z., Zhang, W. ... Zhang, X. (2014). Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction. International Journal of Molecular Medicine, 33, 171-177. https://doi.org/10.3892/ijmm.2013.1558
MLA
Sun, L., Hao, Y., Nie, X., Xu, J., Li, Z., Zhang, W., Liu, Y., Zhang, X."Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction". International Journal of Molecular Medicine 33.1 (2014): 171-177.
Chicago
Sun, L., Hao, Y., Nie, X., Xu, J., Li, Z., Zhang, W., Liu, Y., Zhang, X."Recombinant AAV-PR39-mediated hypoxia-inducible factor 1α gene expression attenuates myocardial infarction". International Journal of Molecular Medicine 33, no. 1 (2014): 171-177. https://doi.org/10.3892/ijmm.2013.1558
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